Antique Atlas Auto Marker

v1.6.1 maintenance

• fix librarians not being marked
• fix librarians being marked at player position instead of its own
• fix various automark configs not being modifiable/registered
• fix otg markers not having their own namespace leading to conflicts between those and vanilla markers
• make village, end city and mineshaft mapgenstruct marker settings automatically have the correct default markertype (village, end_city, pickaxe)